Package org.apache.cassandra.cql3

Class Operation.Prepend

java.lang.Object

org.apache.cassandra.cql3.Operation.Prepend

All Implemented Interfaces:

Operation.RawUpdate

Enclosing class:

Operation

public static class Operation.Prepend
extends Object
implements Operation.RawUpdate

Constructor Summary

Constructors

Constructor	Description
Prepend(Term.Raw value)

Method Summary

Modifier and Type	Method	Description
boolean	isCompatibleWith(Operation.RawUpdate other)
Operation	prepare(TableMetadata metadata, ColumnMetadata receiver, boolean canReadExistingState)	This method validates the operation (i.e.
protected String	toString(ColumnSpecification column)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Prepend

public Prepend(Term.Raw value)

Method Details

prepare

public Operation prepare(TableMetadata metadata,
 ColumnMetadata receiver,
 boolean canReadExistingState)
                  throws InvalidRequestException

Description copied from interface: Operation.RawUpdate

This method validates the operation (i.e. validate it is well typed) based on the specification of the receiver of the operation. It returns an Operation which can be though as post-preparation well-typed Operation.

Specified by:

prepare in interface Operation.RawUpdate

receiver - the column this operation applies to.

canReadExistingState - whether the update depends on existing state

Returns:

the prepared update operation.

Throws:

InvalidRequestException

toString

protected String toString(ColumnSpecification column)

isCompatibleWith

public boolean isCompatibleWith(Operation.RawUpdate other)

Specified by:

isCompatibleWith in interface Operation.RawUpdate

Returns:

whether this operation can be applied alongside the other update (in the same UPDATE statement for the same column).